JPS5818026U - Direct injection combustion chamber of diesel engine - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は縦形水冷エンジンの縦断正面図、第２図はピス
ト・ンの斜視図、第３図はシリンダヘッド底面の斜視図
、第４図は要部の拡大縦断面図、第５図及び第６図は従
来例を示す平面図及び縦断面図である。 ３ａ・・・燃焼室１５の端面（シリンダヘッド３の下面
）、５・・・ピストン、５ａ・・・ピストンヘッド、５
ｂ・・・外周壁、１５・・・熱焼室、１７・・・キャビ
ティ、１７ａ・・・環状端面、１８・・・スキッシュ溝
、１９・・・スキッシュ突条。Fig. 1 is a longitudinal sectional front view of a vertical water-cooled engine, Fig. 2 is a perspective view of the piston, Fig. 3 is a perspective view of the bottom of the cylinder head, Fig. 4 is an enlarged longitudinal sectional view of the main parts, Fig. 5, and FIG. 6 is a plan view and a vertical sectional view showing a conventional example. 3a... End surface of combustion chamber 15 (lower surface of cylinder head 3), 5... Piston, 5a... Piston head, 5
b... Outer peripheral wall, 15... Heat-burning chamber, 17... Cavity, 17a... Annular end surface, 18... Squish groove, 19... Squish protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ピストンヘッド５ａにキャビティ１７を形成し、キャビ
ティ１７の外周肉壁５ｂの環状端面１７ａ上の空気をキ
ャビティ１７内に接線状に流れ込ませるスキッシュ溝１
８を、上記環状端面１７ａにキャビティ１７に連通ずる
形に形成し、ピストン５が上死点に達した状態でスキッ
シュ溝１８に嵌入するキャッシュ突条１９を、燃焼室１
５の端面３ａに突設した事を特徴とする、ディーゼルエ
ンジンの直接噴射式燃焼室。A squish groove 1 in which a cavity 17 is formed in the piston head 5a, and air on the annular end surface 17a of the outer peripheral wall 5b of the cavity 17 flows tangentially into the cavity 17.
8 is formed in the annular end surface 17a in a shape that communicates with the cavity 17, and a cache protrusion 19 that fits into the squish groove 18 when the piston 5 reaches the top dead center is connected to the combustion chamber 1.
A direct injection combustion chamber for a diesel engine, characterized in that it protrudes from an end surface 3a of a diesel engine.